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Engine Specific Info and Questions => IDI Engine => Topic started by: Smokey Eddy on August 02, 2008, 04:38:21 am

Title: Blow by checks?
Post by: Smokey Eddy on August 02, 2008, 04:38:21 am

I've been reading posts about checking blow by on the valve cover and block??

Is the valve cover check this?
i apologize for the poor photo but it was the best i had
(http://i49.photobucket.com/albums/f279/edmcclung/blow-by.jpg)
if you take the hose off that is that your blow by comming out? I thought it was just oil vapour...
im struggling feverishly to fix my starting woes while avoiding dropping cash i DONT have (ie. rebuild.)
and the check on the block? I have no clue. Can anyone explain? and how much is too much?
cheers,
Ed.

Title: Blow by checks?
Post by: burn_your_money on August 02, 2008, 07:51:47 am

Yes either that or the oil filler cap. Oil vapours are blow by.
Basically if you can see it puffing a lot and thick you have problems.

Starting problems aren't always related to compression. Either bad timing, air leaks into the pump or a bad starter or starter circuit as well as glowplugs need to be checked as well

Title: please conferm
Post by: FWD.MOTION on August 03, 2008, 06:50:19 am

It's normal to have some oil in your intake on a vw diesel?

Title: Blow by checks?
Post by: mk2diesel on August 03, 2008, 09:35:28 am

Yup ... that blow by has to go somewhere  :wink:

Title: Blow by checks?
Post by: FWD.MOTION on August 03, 2008, 02:46:53 pm

so if my rings were not blowing by then there wouldnt be oil in the intake>?

Title: Blow by checks?
Post by: burn_your_money on August 03, 2008, 03:07:24 pm

there will always be some blowby

Title: Blow by checks?
Post by: Smokey Eddy on August 04, 2008, 05:00:34 pm

Thanks, cheers mates
I have a decent amount of oil in my intake. None has gone down into the air filter however. A decent amount as in if i shove a paper towel in there almost to the turbo it comes out about 75% solid black.
Also, does anyone know if you can change the rings by dropping the pistons out the oil pan. I've removed my pan before and was tempted to change the rings but i wasn't sure what kind of issues i'd run into so i didn't do it.

Title: Blow by checks?
Post by: burn_your_money on August 04, 2008, 05:17:36 pm

Quote from: "Smokey Eddy"

A decent amount as in if i shove a paper towel in there almost to the turbo it comes out about 75% solid black.

I wouldn't be worried by that

Title: Blow by checks?
Post by: zukgod1 on August 04, 2008, 05:26:47 pm

Quote from: "Smokey Eddy"

Also, does anyone know if you can change the rings by dropping the pistons out the oil pan. I've removed my pan before and was tempted to change the rings but i wasn't sure what kind of issues i'd run into so i didn't do it.

Pistons have to come out the top :(

However it's really not that big a deal to pull the head to do it.

I'm planning on a head removal here soon.